Phil, I have found that the FD is both a device with a lot of needle size ports that easily clog and containing 6 small rubber-like diaphrams that easily could deteriorate with the wrong solvent or with time. Conversely, I have have been able to recover a few fuel distributors that had been setting for several years without any fuel stabilizer. In fact, the FD's seem more durable and more cleanable than I ever dreamed. Without any large numbers to justify a statistical support for what's the best cleaning method, I have had the best success with soaking in Sea Foam for a week or two. I know the soak has done its job when the plunger is no longer stuck in the distributor. (Be careful that the plunger does not drop or get scratched against anything (even a paper towel)). I also spray all the port with Sea Foam Deep Creep before submerging in the Sea Foam Injector Cleaner. After re-installing on the car, I add a can of the same cleaner to the fuel tank after each cleanup for about 3 or 4 fills of fuel. If that doesn't work, I send it to a Bosch authorized rebuilder who rebuilds the unit for about $350. A word of caution from someone that will try to fix almost anything: Despite how much you are tempted, do NOT try to open the FD or attempt to do an internal fix. This repair takes special expertise and equipment and is an extreme safey hazard. Good luck, Greg __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/